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HDMI is a type of video interface developed to carry high definition video signals. Additionally, HDMI will support standard definition video and carries audio as part of the signal. The cable provides a convenient method of carrying video, audio and control signals between devices without the need to use multiple wires.
HDMI is also compatible with DVI, a video display interface for computer displays. Unlike HDMI, DVI does not handle audio so the compatibility is limited to video only.
HDMI supports an encoding system known as HDCP. The encoding is designed to prevent unauthorized copying of video content and increasingly commercial content is using the protection system.
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